Interface: User Personal Computing Devices - Traveler
![User Personal Computing Devices to Traveler Interface Diagram](../../images/ifs/if32-48.gif)
Architecture Flow Definitions
traveler input (Existing)
User input from a traveler to summon assistance, request travel information, make a reservation, or request any other traveler service.
traveler interface updates (Existing)
Visual or audio information (e.g., routes, messages, guidance, emergency information) that is provided to the traveler.